Posterior urethral valves are the commonest cause of urethral obstruction in a male child. It has significant effects on the development of upper urinary tracts and in the evolution of urinary bladder function. The effect on the kidneys and the urinary bladder persists even after the successful management of the obstructing valves. A detailed evaluation of the associated bladder dysfunction will help in planning management protocols that will improve the long-term outcome of these patients.
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